<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <script type="text/javascript">
    function tulin(say){
      switch(say){
        case'土豆';
        console.log('哟');
        break;
        case'哟';
        console.log('切克闹');
        break;
        default:

      }
    }
  tulin('土豆');
  tulin('哟');
  </script>
  </body>
</html>
